Home / 2,212.99-3,320.33-979.54

Finding the Fourth Proportional to 2,212.99, 3,320.33 and 979.54

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Solution

The fourth proportional to 2,212.99, 3,320.33 and 979.54 is: 1,469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.99 : 3,320.33 = 979.54 : x
  2. Step 2: Convert to fraction form
    2,212.99/3,320.33 = 979.54/x
  3. Step 3: Cross multiply
    2,212.99x = 3,320.33 × 979.54
  4. Step 4: Simplify right side
    2,212.99x = 3,252,382.85
  5. Step 5: Solve for x
    x = 3,252,382.85/2,212.99
  6. Step 6: Final answer
    x = 1,469.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.